Human facial expressions differ from those of animals in the degree __________ they can be controlled on purpose.

If the tunnel was built, it would Britain France for the first time in history.[ ]

Hurry upXiao Shenyang is coming—— Oh, I was afraid that we_____

here are many different types of food, some animals spend their lives eating only one type.

I remember that,an old church on the top of the hill many years ago[ ]